Wrench



Patented Dee 30, 1924.

; FUNETED STATES JESSE G. SIMS, OF CROWN CITY, OHIO.

WRENCH.

Application filed February 16, 1924. Serial No. 693,287.

T 0 all whom it may concern:

Be it known that I, Jnssr. GILBERT SIMS, a citizen of the United States, residing at Crown City, in the county of Gallia and State of Ohio, have invented certain new and useful Improvements in renches, of which the following is a specification, reference being had to the accompanying drawmgs.

This invention relates to an improved wrench which may be used for tightening bolts and for tightening other articles which are threaded into place.- One object of the invention is to provide a wrench having an improved movable jaw which is slidable upon the shank or the stationary jaw and to provideimproved means for permitting the movable jaw to be moved longitudinally to an adjusted position and prevented from having movement out of tight gripping engagement with the article to be turned when the wrench is in use.

Another object of the invention is a wrench having an improved type of latch for engaging stepped shoulders provided upon the shank of the movable j aw so that the movable jaw may be manually moved to a desired position and prevented from being forced out of operative engagement with the nut when pressure is applied but at the same time permit of the jaw being moved from the stationary aw and then readily returned towards the stationary jaw until it engages with the nut positioned between the two jaws.

Another object of the invention is to so mount the movable jaw and shank thereof that they may be slidably carried by the shank of the stationary jaw and guided in their sliding movement.

Another object of the invention is to provide a wrench in which the pivot pin, which serves to pivotally mount the latch for engaging the movable jaw, may also serve as means for holding a handle element in place about the shank of the stationary jaw.

This invention is illustrated in the accompanying drawings, wherein z- Figure 1 is a view showing the wrench in side elevation.

Figure 2 is a longitudinal sectional view of the wrench.

Figures 3, 4 and 5 are transverse sectional views taken respectively along the lines 3S, l4, and 5-5 of Figure 2.

This improved wrench is provided with a stationary jaw 1 having a shank 2 extendmg therefrom and provided with a longitudinally extending passage 3 which leads from the rear end of the shank and at its inner end is provided with side slots 4 which extend longitudinally of the shank of the stationary jaw .and are formed a suflicient length to permit the movable aw to have the desired amount of sliding movement longitudinally upon the shank of the stationary jaw. The movable jaw 5 is provided with a hollow body which slidably fits upon the shank 2 of the stationary jaw 1 for movement longitudinally thereon. This hollow body is provided with heads 6 and 7 which extend in opposite directions from the hol lowbody and are intended to firmly grip a nut to be turned. It should be noted that the head 6 may have close contacting engagement with the stationary jaw 1 whereas the head 7 will be spaced slightly from the stationary jaw when the head 6 is in contact therewith. Therefore, when the movable jaw is adjusted upon the shank of the stationary jaw. the head? will at all times be positioned a greater distance from the stationary jaw than the head 6 and, therefore, the head 7 may be used for engagement with a nut which is of greater size, than that which would be placed between the head 6 and the stationary jaw.

This movable jaw is provided with a shank 8 which is in the form of a bar fitting into the passage 3 of the shank 2 and having its inner or forward end provided with an opening to receive the rivet 9 which is carried by the tubular body of the movable jaw and passes through the side slots at of the shank 2. This shank or bar 8 will therefore be moved longitudinally in the pocket 3 when the movable jaw is moved and the pin 9 will serve not only as means to connect the bar 8 with the body of the movable jaw, but will also serve as means for limiting sliding movement of the movable aw. The outer or free end portion of this bar 8 has been provided with stepped shoulders 10 for engagement by the inner end of a latch 11 which extends longitudinally in the pocket 3 and is pivotally mounted by means of a pivot pin 12. A spring 13 is mounted in the outer end portion of this pocket and engages the handle portion of this latch so that the latch is normally held in an operative position but may be swung out of the operative pos tion so that the movable jaw 'the'movable jaw has been moved'further away from the'stationary jaw than desired may move longitudinally upon the shank 2 away from the stationary jaw. The outer end portion of the handle-forming end of this latch extends beyond the end of the shank 2 and is formed into a head 14 so that this latch may be easily pressed upon in order to swing it to an inoperative positioILf tion. The movable jaw can then be moved upon the shank 2 away from the stationary jaw a suflicient distance to permit of the nut-to be turned being passed between the stationary jaw and movable jaw. After the wrench has, been applied to the nut to be turned it will, in most cases, be found that and the movable. jaw will therefore be movedtowards the stationary jaw until it engages with the nut; The latch will in the meantime h(ve been released and permitted to return .to the operative position and therefore as the movable jaw is moved 1 towards the stationary jaw'the inner end be turned so that the nut will be positioned pawl will have proper engagement with one of the. latch will move from one step 10 to another. If it'is found that the movable jaw cannot be brought into properengagemerit with the nut when this nut is positioned between the stationary jaw and the.

head 6 of the movable jaw the wrench will between the head 7 and the stationary jaw. The movable jaw will then be again moved towards the stationary jaw and it will probably be found that when the head 7 is in engagement with the nut to be turned the of the stepped shoulders atthefree'end of the shank 8. The pawl will nowprevent Y the shank from having movement towards the open rear end of the pocket 3 and therefore the movable jaw will be held at the desired distance away from the stationary jaw and the necessary pressure can beapplied to turn the nut without danger of the pressure causing the movable jaw to be forced away from the stationary jaw. After the'nut has been tightened or removed the latch may be moved to the inoperative po sition and the movable jaw can then. moved out of engagement with the nut and moved into close engagement with the stationary jaw. There has therefore been provided a wrench having a novel arrangement of movable jaw and novel latch means for with respect to the stationary jaw.

, What is claimed is A wrench comprising an elongated shank. of hollow formation terminatlng'at one end controlling movement of the movable jawin a relatively fixed jaw, said shank being formed with slots'initsopposite sides, a carriage slidably mounted on said shank in entirely embracing relation thereto and I formed with a jawcoeacting with the first namedjaw, a bar within the hollow shank, a p n passing through the carriage and through the slots in'the shank and throughv the bar, the end of the bar most remote from the jaws being formed with a plurality of stepped shoulders, a 'dogrpivoted interme diate its ends within the hollow shank and having'one end acting as. a pawl and c0- operating with said shoulders, the other end of the dog projecting beyond the end of the shank most remote from the jaws, and a spring within the shank engaging the dog for normally urging said dog into engagement with said shoulders. V

In testimony whereof I hereunto aflix' my signature.

JESSE e; srMs. 

